1311804552 has 16 divisors (see below), whose sum is σ = 3279511440. Its totient is φ = 437268176.

The previous prime is 1311804547. The next prime is 1311804607. The reversal of 1311804552 is 2554081131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27329238 + ... + 27329285.

It is an arithmetic number, because the mean of its divisors is an integer number (204969465).

Almost surely, 2^1311804552 is an apocalyptic number.

1311804552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1311804552 is an abundant number, since it is smaller than the sum of its proper divisors (1967706888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311804552 is a wasteful number, since it uses less digits than its factorization.

1311804552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54658532 (or 54658528 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1311804552 is about 36218.8424994505. The cubic root of 1311804552 is about 1094.6863712623.

Adding to 1311804552 its reverse (2554081131), we get a palindrome (3865885683).

The spelling of 1311804552 in words is "one billion, three hundred eleven million, eight hundred four thousand, five hundred fifty-two".